20269865

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 34007040

約数和(自身を除く): 13737175

約数列:

[1, 5, 7, 11, 17, 19, 35, 55, 77, 85, 95, 119, 133, 163, 187, 209, 323, 385, 595, 665, 815, 935, 1045, 1141, 1309, 1463, 1615, 1793, 2261, 2771, 3097, 3553, 5705, 6545, 7315, 8965, 11305, 12551, 13855, 15485, 17765, 19397, 21679, 24871, 30481, 34067, 52649, 62755, 96985, 108395, 124355, 152405, 170335, 213367, 238469, 263245, 368543, 579139, 1066835, 1192345, 1842715, 2895695, 4053973, 20269865]

約数ペア:

[(1, 20269865), (5, 4053973), (7, 2895695), (11, 1842715), (17, 1192345), (19, 1066835), (35, 579139), (55, 368543), (77, 263245), (85, 238469), (95, 213367), (119, 170335), (133, 152405), (163, 124355), (187, 108395), (209, 96985), (323, 62755), (385, 52649), (595, 34067), (665, 30481), (815, 24871), (935, 21679), (1045, 19397), (1141, 17765), (1309, 15485), (1463, 13855), (1615, 12551), (1793, 11305), (2261, 8965), (2771, 7315), (3097, 6545), (3553, 5705)]